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4.4. Tutorial I: JAAS Authentication
Overview
This tutorial shows you how to communicate with the JBoss A-MQ broker using example producer and consumer JMS clients. The JMS clients must first be modified, however, to provide the requisite username/password JMS credentials.
Prerequisites
The following prerequisites are needed for this tutorial:
- Apache Ant—Apache Ant is a free, open source build tool from Apache. You can download the latest version from http://ant.apache.org/bindownload.cgi (minimum is 1.8).
- Apache ActiveMQ installation—the standalone installation of Apache ActiveMQ has some demonstration code that is not available in Red Hat JBoss A-MQ. The Apache ActiveMQ distribution is provided in the
InstallDir/extrasdirectory in an archive format. Uncompress and extract the archive to a convenient installation location,ActiveMQInstallDir.
Tutorial steps
To test the example JMS clients with JBoss A-MQ, perform the following steps:
Install the consumer and producer JMS clients
The Apache ActiveMQ distribution is provided in the
InstallDir/extras directory in an archive format. Uncompress and extract the archive to a convenient installation location, ActiveMQInstallDir (the consumer and producer clients can be accessed by running ant targets under the ActiveMQInstallDir/example directory).
Customize the users.properties file
The
karaf JAAS realm can be administered by editing the InstallDir/etc/users.properties file, where the file contains entries in the following format:
Username=Password,Role1,Role2,...
For example, the default
users.properties file shows a sample entry (which is commented out) for the user, admin, with password, admin, as follows:
#admin=admin,admin
Customize the
users.properties file by adding at least one user entry with the admin role. For example:
Username=Password,admin
Start the JBoss A-MQ container
Change directory to
InstallDir/bin and enter the following command:
./amq
Run the consumer with JMS credentials
To connect the consumer tool to the
tcp://localhost:61616 endpoint, change directory to ActiveMQInstallDir/example and enter the following command:
ant consumer -Duser=admin -Dpassword=admin -Durl=tcp://localhost:61616 -Dmax=100
You should see some output like the following:
Buildfile: build.xml
init:
compile:
consumer:
[echo] Running consumer against server at $url = tcp://localhost:61616 for subject $subject = TEST.FOO
[java] Connecting to URL: tcp://localhost:61616 (admin:admin)
[java] Consuming queue: TEST.FOO
[java] Using a non-durable subscription
[java] Running 1 parallel threads
[java] [Thread-2] We are about to wait until we consume: 100 message(s) then we will shutdownRun the producer with JMS credentials
To connect the producer tool to the
tcp://localhost:61616 endpoint, open a new command prompt, change directory to example and enter the following command:
ant producer -Duser=admin -Dpassword=admin -Durl=tcp://localhost:61616 -Dmax=100
In the window where the consumer tool is running, you should see some output like the following:
[java] [Thread-2] Received: 'Message: 0 sent at: Mon Mar 18 17:12:16 CET 2013 ...' (length 1000) [java] [Thread-2] Received: 'Message: 1 sent at: Mon Mar 18 17:12:16 CET 2013 ...' (length 1000) [java] [Thread-2] Received: 'Message: 2 sent at: Mon Mar 18 17:12:16 CET 2013 ...' (length 1000) [java] [Thread-2] Received: 'Message: 3 sent at: Mon Mar 18 17:12:16 CET 2013 ...' (length 1000) [java] [Thread-2] Received: 'Message: 4 sent at: Mon Mar 18 17:12:16 CET 2013 ...' (length 1000)
